I don't hang out in "Non-Firearm Weapons" much, and certainly didn't expect to find Leatherman multi-tool talk here, but I'm glad I did.
I carry two Leatherman products on the job (EMS.) One is the Wingman, a light basic multi-tool, and the other is the Raptor, a way-cool tool made for medics and ER nurses. This one includes folding trauma scissors, a seat-belt/bandage cutter, oxygen tank key, mini-ruler (wound measurement), and glass punch.